User-defined DSCP classification (queuing Packet Forwarding Engines only)

On specified routers with Enhanced Type III FPCs only, you can configure user-defined DSCP-based BA classification for MPLS interfaces or VPLS or Layer 3 VPN routing instances (LSI interfaces). 

To classify MPLS packets on the routing instance at the egress PE router, include the dscp statement or dscp-ipv6 statement at the [edit class-of-service routing-instances routing-instance-name classifiers] hierarchy level. To classify MPLS packets at the core-facing interface, apply the classifier at the [edit class-of-service interface interface-name unit unit-name classifiers (dscp | dscp-ipv6) classifier-name family mpls] hierarchy level.